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| author | Thomas Gleixner <tglx@linutronix.de> | 2009-07-25 16:57:53 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2009-07-27 21:07:17 +0200 |
| commit | 3a6e55cb2bea8918e6bb6c8ba0daea729ec576b8 (patch) | |
| tree | ab54cf3078e6f1d66e60ddc5c64f8f880c75e2e2 /kernel/time/clockevents.c | |
| parent | 4b064e4f9ec7a5befcab91b9b1f2b0314c5a051a (diff) | |
| download | lwn-3a6e55cb2bea8918e6bb6c8ba0daea729ec576b8.tar.gz lwn-3a6e55cb2bea8918e6bb6c8ba0daea729ec576b8.zip | |
clockevents: Convert clockevents / tick device locks to atomic_spinlock
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time/clockevents.c')
| -rw-r--r-- | kernel/time/clockevents.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c index a6dcd67b041d..a21d577867be 100644 --- a/kernel/time/clockevents.c +++ b/kernel/time/clockevents.c @@ -28,7 +28,7 @@ static LIST_HEAD(clockevents_released); static RAW_NOTIFIER_HEAD(clockevents_chain); /* Protection for the above */ -static DEFINE_SPINLOCK(clockevents_lock); +static DEFINE_ATOMIC_SPINLOCK(clockevents_lock); /** * clockevents_delta2ns - Convert a latch value (device ticks) to nanoseconds @@ -139,9 +139,9 @@ int clockevents_register_notifier(struct notifier_block *nb) { int ret; - spin_lock(&clockevents_lock); + atomic_spin_lock(&clockevents_lock); ret = raw_notifier_chain_register(&clockevents_chain, nb); - spin_unlock(&clockevents_lock); + atomic_spin_unlock(&clockevents_lock); return ret; } @@ -181,13 +181,13 @@ void clockevents_register_device(struct clock_event_device *dev) BUG_ON(dev->mode != CLOCK_EVT_MODE_UNUSED); BUG_ON(!dev->cpumask); - spin_lock(&clockevents_lock); + atomic_spin_lock(&clockevents_lock); list_add(&dev->list, &clockevent_devices); clockevents_do_notify(CLOCK_EVT_NOTIFY_ADD, dev); clockevents_notify_released(); - spin_unlock(&clockevents_lock); + atomic_spin_unlock(&clockevents_lock); } EXPORT_SYMBOL_GPL(clockevents_register_device); @@ -236,7 +236,7 @@ void clockevents_notify(unsigned long reason, void *arg) { struct list_head *node, *tmp; - spin_lock(&clockevents_lock); + atomic_spin_lock(&clockevents_lock); clockevents_do_notify(reason, arg); switch (reason) { @@ -251,7 +251,7 @@ void clockevents_notify(unsigned long reason, void *arg) default: break; } - spin_unlock(&clockevents_lock); + atomic_spin_unlock(&clockevents_lock); } EXPORT_SYMBOL_GPL(clockevents_notify); #endif |